Sn51dp Datasheet - Pdf

: RoHS compliant, ensuring environmental safety standards are met. Pinout Configuration

Feedback voltage input to sense LED current and manage fine regulation loop stability.

: Verify that the main circuit board supplies clean power to the chip (typically 12V rails).

– Feedback voltage input from the LED cathode array to track real-time current draw.

PWM / Analog dimming input for backlight brightness adjustment. GATE sn51dp datasheet pdf

The primary reason a manufacturer's "official" datasheet is difficult to locate is that the SN51DP is frequently used as a . This is a common practice in the consumer electronics industry, where a manufacturer produces a pin-to-pin compatible and functionally identical version of another company's popular chip. In this case, the SN51DP is widely considered a direct equivalent or alternative to the OB3350CP . This means if you have a datasheet or application circuit for the OB3350CP, it can be extremely useful for understanding and repairing circuits using the SN51DP.

Available in compact SSOP-10 or MSOP-10 formats, making it ideal for thin layout panel boards. Maximum Operating Temperature: 85 °C. Environmental Standard: 100% RoHS compliant. Pin Count: 10 functional pins. Pin Configuration and Functions

The primary design focus of the SN51DP revolves around constant-current control, which is mandatory for ensuring long-term LED reliability and preventing thermal runaway.

: While the OB3350CP is often designed in a smaller SOP-8 pattern for simpler power stages, its internal controller logic behaves identically to the SN51DP. Be aware that you cannot drop an SOP-8 component onto an SSOP-10 circuit pad without custom wire jumpers or adapter PCBs. Common Application and Troubleshooting Practices – Feedback voltage input from the LED cathode

If you need to purchase this component, it is commonly listed as "New Original" on electronics marketplace sites. If you'd like, I can: Help you locate a .

In repair scenarios, technicians sometimes bypass the protection circuit by connecting a resistor from Pin 9 (OVP) to diagnose backlight issues. Equivalency:

: The TV boots up, sound is audible, and a faint image can be seen by shining a flashlight onto the panel, but the screen stays pitch-black.

In typical operations, the SN51DP drives a step-up (boost) converter circuit. When the TV turns on, a BL_ON or ENA signal triggers the IC, while the DIM pin controls brightness using duty cycles. Troubleshooting LED Backlight Protections This is a common practice in the consumer

Over-Voltage Protection input; monitors output voltage to prevent LED string damage. Pin 4 (GND): Common ground connection.

Because ON-BRIG documentation is rarely hosted on mainstream consumer component databases, finding a validated PDF requires targeting specialized repair repositories. You can securely view and download the official technical literature using these verified links: The IC Sn51dp schematic , ic inverter by-passing protection

Reference voltage or secondary protection node.

A common failure mode in display systems is a "sound working, but screen completely blank (No Backlight)" symptom. The SN51DP driver is often at the center of this problem. 1. Verifying Power and Gate Rails